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Flora.Sa.Gov.Au/Jabg JOURNAL of the ADELAIDE BOTANIC GARDENS AN OPEN ACCESS JOURNAL FOR AUSTRALIAN SYSTEMATIC BOTANY flora.sa.gov.au/jabg Published by the STATE HERBARIUM OF SOUTH AUSTRALIA on behalf of the BOARD OF THE BOTANIC GARDENS AND STATE HERBARIUM © Board of the Botanic Gardens and State Herbarium, Adelaide, South Australia © Department of Environment, Water and Natural Resources, Government of South Australia All rights reserved State Herbarium of South Australia PO Box 2732 Kent Town SA 5071 Australia J. Adelaide Bot. Gard. 18(1): 21-103 (2002) A TAXONOMIC REVISION OF THE GENUS VERBENA L. (VERBENACEAE)* IN AUSTRALIA Ahmad Abid Munir State Herbarium of South Australia, Plant Biodiversity Centre PO Box 2732, Kent Town, South Australia, 5071 Abstract A taxonomic revision of Verbena in Australia is presented. The following seven species are recognized: V aristigera, V bonariensis,V. hispida, V.litoralis,V. officinalis,V. rigidaand V.supina.Besides the typical varieties, the following are confirmed: V.litoralisvar.brasiliensis, V. officinalisvar.africana, V. officinalisvar. gaudichaudii, V. officinalisvar.macrostachyaand V.supinavar.erecta.In addition V.officinalisvar.eremicola (from South Australia) and V. officinalis var. monticola (from Victoria) are described as new and V. bonariensis var.conglomerataand V.officinahsvar.haleiare recorded from Australia for the first time. V.officinalisvar. africanawas reduced from the level of a subspecies, and Vsupina f. erectais upgraded to var.erecta.The following are reduced to synonymy: V.africanasynonym of V.officinalisvar.africana, V. gaudichaudiisynonym of V.officinalisvar.gaudichaudii,V. incomptasynonym of V.bonarisiensisvar.bonariensis, V supina f. petiolulatasynonym of V.supinavar.supina, V. litoralisvar.portoricensissynonym of V.litoralisvar.litoralis, V.isabelleiand V.chacensissynonym of V.litoralisvar.brasilensis.Three species names typified here are V. hispida, V. rigidaand V.scaberrima. Affinities and distribution are considered for the genus and each species. A key to the species and infraspecific taxa is provided, and a detailed description of each species is supplemented by a habit sketch of a flowering branch and analytical drawings of the flower. Taxonomic history of the genus The genus Verbena was described by Linnaeus (1753) with fourteen species of which eight have since been removed to other genera and one placed in synonymy (Moldenke 1971a, 1980). The Linnaean concept was too inclusive as he "included within it species with two stamens and species with four stamens, among the latter being V. officinalis, the historic type of the genus" (Stearn 1961). The type (lectotype) of the genus came from Mediterranean Region and is now preserved in the Clifford Herbarium at the British Museum (Nat.Hist.). The genus was placed in the class "Diandria Monogynia" where it was retained by Reichard (1778), Murray (1784), Schreber (1791), Loureiro (1790), Gmelin (1791), Persoon (1797), Willdenow (1797), Hedwig (1806), Velloso (1829) and a few others. Jussieu (1759) placed it in "Verbenae" which was accepted by Adanson (1763) and Reichenbach (1828). The latter, however, referred Verbena and other related genera to the Labiatae. In 1764, Gleditsch recorded it in section "Petalostemonum" and Linnaeus in the tribe "Personatae". The latter was accepted by Scopoli (1777) and Giseke (1792). Scopoli (1772) and Walter (1788) placed it in "Didinamia Gymnospermia", Rueling (1774) in "RingentesVerticillates",deJussieu (1789)in"Vitices",Necker (1790)inhis "Coryphytorum" and Ventenat (1799) under "Pyrenaceae". Ventenat's proposed family was later accepted for the genus by Gray (1821) and Dumortier (1822). Raeuschel (1797) divided the genus Verbena into two sections: Diandrae and Tetrandrae, with true Verbena species in the section Tetrandrae. In 1803, Michaux placed it in "Didynamia Angiospermia" where it was retained by Persoon (1807), Willdenow 1809), Nuttall (1818), Link (1822), Sprengel (1825) and Dietrich (1842). In 1805, Jaume Saint-Hilaire proposed the family The present treatment of the genus Verbena is the sixteenth in the series of taxonomic revisions in the family Verbenaceae in Australia. (See Munir 1982, 1984a, 1984b, 1985, 1987a, 1987b, 1989, 1990a, 1990b, 1991, 1992, 1993a, 1993b, 1995, 1996). 21 A.A Munir J. Adelaide Bot. Gard .20: (2002) Verbenaceae for Verbena and other related genera. The family Verbenaceae was accepted for the genus by de Jussieu (1806), Robert Brown (1810), Kunth (1818, 1823), D. Don (1825), Dumortier (1829), Baffling (1830), Endlicher (1838), Bentham (1839, 1870, 1876), Mueller (1882), 1889), Bailey (1883, 1901, 1913), Lam (1919) and by the majority of other botanists. Dumortier (1829) divided the family Verbenaceae into two tribes, Verbeneae and Viticeae. The tribe Verbeneae was accepted by Bartling (1830), Chamisso (1832), Bentham (1839, 1870, 1876), Schauer (1847), Walpers (1852), Miguel (1858), Grisebach (1862), Harvey (1868), Clarke (1885), Gray (1886), Durand (1888), Bailey (1883, 1901, 1913), King & Gamble (1909), Lem& (1843) and others. In 1838, Endlicher divided the family Verbenaceae into three tribes Lippieae, Lantaneae and Aegiphileae, with Verbena in the tribe Lippieae. This was accepted by Meisner (1840), Dietrich (1843) and Walpers (1845, 1847). Schauer (1847) reclassified the Verbenaceae into three tribes: Verbeneae, Viteae and Avicennieae.He subdividedthetribeVerbeneaeintosevensubtribesnamely Spielmannieae, Monochileae, Casselieae, Verbeneae, Lantaneae, Duranteae and Petreae. Schauer (1847) also split the genus into two sections: Verbenaca and Glandularia, based chiefly on the presence or absence of glandular appendages on anther connectives. These sections were accepted by Briquet (1895) and Perry (1933). Subsequently, these sections were given subgeneric rank by Lewis & Oliver (1961) and generic rank by Small (1933), Schnack (1944, 1964), Schnack & Coyas (1944, 1946) and Umber (1979), based on morphological, anatomical and cytological evidences. In 1895, Briquet reclassified the Verbenaceae and upgraded the tribe Verbeneae to a subfamily Verbenoideae. The latter consisted of six tribes: Verbeneae ("Euverbeneae"), Lantaneae, Priveae, Monochileae, Petraeae and Citharexyleae. This classification was adopted by Dalla Torre & Harms (1904), Lam (1919), Gardner (1931), Junell (1934), Moldenke (1959, 1971), Melchior (1964), Lopez-Palacios (1977), Verdcourt (1992) and several other botanists. Briquet further subdivided the section Verbenaca into seven subsections: Pungentes, Nobi les, Pachystachyae, Junciformes, Acerosae, Verticilliflorae and Leptostachyae. These sections and subsections were adopted by Dalla Torre & Harms (1904). The majority of botanists, however, have not divided the genus into sections and subsections, but have retained it in the Verbenaceae without reference to any subfamily or a tribe. In the present revision, Briquet's (1895) classification of the Verbenaceae is followed in retaining Verbena in the tribe Verbeneae. The subgeneric section proposed for the genus may be useful, but not used here because too few species have been studied. Australian history of the genus The first Australian record of Verbena was made by Robert Brown (1810) during 1802- 1805 from Port Jackson in New South Wales, when he recognized one species,V. officinalis L. Later, the existence of Verbena in Australia was reported by Sprengel (1825) and Schauer (1847) without citing any collections. From 1848 onwards, records of Verbena in Australia gradually increased with further collecting from different parts of Australia. In 1858, Mueller described one of his own collections from Peak Down Queensland, as a new species V. macrostachya. Hooker (1859) and Mueller (1868) each recorded V. bonariensis and V. officinalis from mainland Australia, and Woolls (1869) reported V. bonariensis as an introduced plant in the neighbourhood of Sydney. In 1870 Bentham published a complete account of the Australian Verbenaceae and listed two Verbena species viz.V.bonariensis and V.officinalis. In the same publication, Bentham reduced V. rnacrostachya to a variety of V. officinalis. Later, Mueller (1875) recorded two Verbena species, V. venosa Gillies & Hook. and V. macrostachya. V. venosa is here placed under V. rigida Spreng. and V. macrostachya is recognized as a variety of V. 22 J. Adelaide Bot. Gard .20: (2002) Verbenaceae:Verbena officinalis. In 1879, Bailey and Tenison-Woods recorded three Verbena species from Queensland: V. bonariensis, V. officinalis and V. venosa. In the Census of Vascular Plants of Australia, Mueller (1882, 1889) recorded only two Verbena species: V. officinalis and V. macrostachya. Bailey (1883, 1890) listed four Verbena species from Queensland namely V officinalis, V. macrostachya, V. bonariensis and V. venosa. Subsequently, Bailey (1901, 1913) followed Bentham (1870) in accepting V. macrostachya as a variety of V. officinalis. Dixon (1906) recorded from New South Wales respectively, V. venosa and V. officinalis. In 1904, Briquet described one of Gaudichaud's collections (no. 144) from Port Jackson as var. gaudichaudii under V. officinalis. Black (1909, 1917) for the first time recorded V. supina L. as a naturalised species in South Australia. A few years later, Domin (1828) listed from Queensland two Verbena species: V.officinalis and V. venosa. In 1929, Black reported V. tenera Spreng. from temperate South Australia which was later found to be a misidentification of naturalised V. aristigera S. Moore. Subsequently, Robertson (1957) published an account
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